Environmental chamber for multi-parameter composite test

Abstract

The invention discloses an environmental chamber for a multi-parameter composite test, comprising an airtight case which is connected with a case cover in a sealing mode, wherein the case and the case cover both comprise an outer layer made of metal to ensure the rigidity of the case and an insulation layer made of metal to maintain the internal temperature of a composite cavity, the inner cavity of the case forms an environmental composite cavity independent to the external; the composite cavity is successively provided with a noise generation mechanism fixed on the upper part of the composite cavity, a temperature control mechanism fixed on the wall of the composite cavity, a vibration generation mechanism, an air intake and an exhaust port from top to down, wherein the vibration generation mechanism is arranged in the composite cavity and is in linkage with an external vibration source, the air intake is connected with an air pump and used for introducing air into the composite cavity to form a pressure filed, and the exhaust port is connected with a vacuum generator in a sealing mode. The invention has the advantages of being capable of fully stimulating the working environment of parts and having good test result and high accuracy.

Description

technical field [0001] The invention relates to an environment chamber used for a reliability accelerated test system. technical background [0002] With the development of science and technology, especially aerospace technology, the reliability requirements for electromechanical components are getting higher and higher. The application environment of these components and products is becoming more and more complex. For example, when a spacecraft is launched and re-enters the atmosphere, it will be affected by complex environmental factors such as linear acceleration, temperature, vibration, and noise. In order to ensure that the spacecraft can work normally in flight, its surface materials and internal electronic equipment must withstand this external impact. Environmental testing with the advantages of low cost, high efficiency, controllability and repeatability is of great significance for detecting the response of products to environmental impact. However, the existing ...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the prior art that can only simulate a single environmental parameter, cannot fully simulate the working environment of the device, the test effect is poor, and the accuracy is low, the present invention provides a working environment that can fully simulate the device, the test effect is good, and the accuracy is high. High environmental chamber for multi-parameter composite test

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